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1256 Commits

Author SHA1 Message Date
LemonBoy
ddb87237de Fix crash with peer type resolution & error unions 
Fixes #3353
 2019-10-20 22:03:39 -04:00
LemonBoy
771dafbaba Resolve lazy slice start/end values 
Fixes #3489
 2019-10-20 14:49:25 -04:00
LemonBoy
6f7939a452 Prevent too eager constant-folding of switch expression 
A pointer was wrongly assumed to be comptime-available causing the
analysis pass to assume its initial value was constant.

Fixes #3481
 2019-10-19 13:48:26 -04:00
Andrew Kelley
4e98512344
reduce the size of IrInstruction by 8 bytes on 64 bit targets 
This brings the std lib tests down from 3.51 GiB memory usage
to 3.41 GiB, by making two fields that were 64 bits 32 bits.
This is a small thing; the bigger wins will come from the strategy
outlined in the previous commit.
 2019-10-19 03:51:04 -04:00
Andrew Kelley
fa9f1d2396
add -DZIG_ENABLE_MEM_PROFILE option and -fmem-report flag 
This can be used to find what's taking up memory in the compiler.
Here's an example of how to use it:

```
./zig test ../lib/std/std.zig --cache off -fmem-report
```

And here's the output I get for this on x86_64-linux-gnu today:

```
Const: 6462833 items, 152 bytes each, total 936.84 MiB
ConstGlobalRefs: 17236534 items, 24 bytes each, total 394.51 MiB
ResetResult: 1698108 items, 160 bytes each, total 259.11 MiB
ConstExprValue: 3118299 items, 80 bytes each, total 237.91 MiB
EndExpr: 1345395 items, 168 bytes each, total 215.56 MiB
Unknown_8: 27370821 items, 8 bytes each, total 208.82 MiB
VarPtr: 1127866 items, 168 bytes each, total 180.70 MiB
IrBasicBlock: 794834 items, 120 bytes each, total 90.96 MiB
LoadPtr: 554024 items, 160 bytes each, total 84.54 MiB
Unknown_64: 1245715 items, 64 bytes each, total 76.03 MiB
Unknown_40: 1879218 items, 40 bytes each, total 71.69 MiB
Unknown_72: 989117 items, 72 bytes each, total 67.92 MiB
Return: 423783 items, 160 bytes each, total 64.66 MiB
Unknown_168: 332480 items, 168 bytes each, total 53.27 MiB
Unknown_152: 336890 items, 152 bytes each, total 48.84 MiB
AddImplicitReturnType: 230819 items, 168 bytes each, total 36.98 MiB
Br: 217835 items, 168 bytes each, total 34.90 MiB
Unknown_184: 179529 items, 184 bytes each, total 31.50 MiB
FieldPtr: 179388 items, 184 bytes each, total 31.48 MiB
BinOp: 171004 items, 176 bytes each, total 28.70 MiB
LoadPtrGen: 173287 items, 168 bytes each, total 27.76 MiB
CondBr: 137864 items, 192 bytes each, total 25.24 MiB
Unknown_720: 30918 items, 720 bytes each, total 21.23 MiB
CallSrc: 99320 items, 216 bytes each, total 20.46 MiB
Unknown_160: 129243 items, 160 bytes each, total 19.72 MiB
Unknown_1: 19339456 items, 1 bytes each, total 18.44 MiB
CheckStatementIsVoid: 119838 items, 160 bytes each, total 18.29 MiB
Unknown_48: 371178 items, 48 bytes each, total 16.99 MiB
TestComptime: 101443 items, 160 bytes each, total 15.48 MiB
DeclVarSrc: 72578 items, 184 bytes each, total 12.74 MiB
StorePtr: 72776 items, 176 bytes each, total 12.22 MiB
ZigVar: 79201 items, 160 bytes each, total 12.09 MiB
Unknown_16: 770643 items, 16 bytes each, total 11.76 MiB
Phi: 60482 items, 184 bytes each, total 10.61 MiB
TestErrSrc: 66177 items, 168 bytes each, total 10.60 MiB
Unknown_240: 45164 items, 240 bytes each, total 10.34 MiB
ElemPtr: 58232 items, 184 bytes each, total 10.22 MiB
AllocaSrc: 60053 items, 176 bytes each, total 10.08 MiB
CallGen: 44873 items, 224 bytes each, total 9.59 MiB
SaveErrRetAddr: 63787 items, 152 bytes each, total 9.25 MiB
Unknown_112: 82283 items, 112 bytes each, total 8.79 MiB
AllocaGen: 51909 items, 176 bytes each, total 8.71 MiB
Unknown_24: 373599 items, 24 bytes each, total 8.55 MiB
ResultLocPeer: 113683 items, 72 bytes each, total 7.81 MiB
DeclRef: 36343 items, 168 bytes each, total 5.82 MiB
UnwrapErrPayload: 34603 items, 168 bytes each, total 5.54 MiB
Ref: 33414 items, 168 bytes each, total 5.35 MiB
Unknown_104: 53882 items, 104 bytes each, total 5.34 MiB
DeclVarGen: 32540 items, 168 bytes each, total 5.21 MiB
StructFieldPtr: 30449 items, 176 bytes each, total 5.11 MiB
UnwrapErrCode: 31508 items, 168 bytes each, total 5.05 MiB
Unknown_56: 90256 items, 56 bytes each, total 4.82 MiB
SpillBegin: 28722 items, 168 bytes each, total 4.60 MiB
SpillEnd: 28722 items, 160 bytes each, total 4.38 MiB
ResultLocReturn: 64573 items, 48 bytes each, total 2.96 MiB
PtrType: 14702 items, 184 bytes each, total 2.58 MiB
SliceType: 15005 items, 176 bytes each, total 2.52 MiB
Unknown_176: 13326 items, 176 bytes each, total 2.24 MiB
RefGen: 12881 items, 168 bytes each, total 2.06 MiB
UnOp: 12102 items, 176 bytes each, total 2.03 MiB
SwitchBr: 9453 items, 200 bytes each, total 1.80 MiB
TestErrGen: 11143 items, 160 bytes each, total 1.70 MiB
Unknown_32: 52359 items, 32 bytes each, total 1.60 MiB
CheckSwitchProngs: 9094 items, 184 bytes each, total 1.60 MiB
TypeOf: 9259 items, 160 bytes each, total 1.41 MiB
IntCast: 8772 items, 168 bytes each, total 1.41 MiB
OptionalUnwrapPtr: 8755 items, 168 bytes each, total 1.40 MiB
SwitchTarget: 9094 items, 160 bytes each, total 1.39 MiB
Cast: 8198 items, 176 bytes each, total 1.38 MiB
WidenOrShorten: 8448 items, 160 bytes each, total 1.29 MiB
ErrorUnion: 7613 items, 176 bytes each, total 1.28 MiB
SliceSrc: 6249 items, 192 bytes each, total 1.14 MiB
ErrWrapCode: 7133 items, 168 bytes each, total 1.14 MiB
TypeName: 7328 items, 160 bytes each, total 1.12 MiB
ImplicitCast: 5480 items, 176 bytes each, total 941.88 KiB
ResolveResult: 5638 items, 168 bytes each, total 924.98 KiB
ResultLocInstruction: 22696 items, 40 bytes each, total 886.56 KiB
BitCastSrc: 4947 items, 168 bytes each, total 811.62 KiB
CompileErr: 5148 items, 160 bytes each, total 804.38 KiB
ReturnPtr: 5305 items, 152 bytes each, total 787.46 KiB
Unreachable: 5038 items, 152 bytes each, total 747.83 KiB
TestNonNull: 4716 items, 160 bytes each, total 736.88 KiB
BitCastGen: 4431 items, 160 bytes each, total 692.34 KiB
PtrToInt: 4289 items, 160 bytes each, total 670.16 KiB
SliceGen: 3573 items, 192 bytes each, total 669.94 KiB
ArrayType: 4081 items, 168 bytes each, total 669.54 KiB
IntType: 3868 items, 168 bytes each, total 634.59 KiB
Unknown_88: 7213 items, 88 bytes each, total 619.87 KiB
Truncate: 3771 items, 168 bytes each, total 618.68 KiB
TypeInfo: 3740 items, 160 bytes each, total 584.38 KiB
SwitchVar: 3385 items, 176 bytes each, total 581.80 KiB
ContainerInitFields: 3223 items, 184 bytes each, total 579.13 KiB
ContainerInitList: 2309 items, 192 bytes each, total 432.94 KiB
PtrCastGen: 2626 items, 168 bytes each, total 430.83 KiB
BoolNot: 2457 items, 160 bytes each, total 383.91 KiB
FnProto: 2054 items, 184 bytes each, total 369.08 KiB
MergeErrSets: 1927 items, 176 bytes each, total 331.20 KiB
Unknown_136: 2486 items, 136 bytes each, total 330.17 KiB
Unknown_80: 4059 items, 80 bytes each, total 317.11 KiB
Bswap: 1670 items, 168 bytes each, total 273.98 KiB
TypeId: 1680 items, 160 bytes each, total 262.50 KiB
PtrCastSrc: 1371 items, 176 bytes each, total 235.64 KiB
ErrName: 1193 items, 160 bytes each, total 186.41 KiB
UnionTag: 1120 items, 160 bytes each, total 175.00 KiB
TagName: 1050 items, 160 bytes each, total 164.06 KiB
SizeOf: 942 items, 160 bytes each, total 147.19 KiB
MemberName: 871 items, 168 bytes each, total 142.90 KiB
Import: 881 items, 160 bytes each, total 137.66 KiB
PtrOfArrayToSlice: 758 items, 168 bytes each, total 124.36 KiB
UnionFieldPtr: 710 items, 176 bytes each, total 122.03 KiB
EnumToInt: 778 items, 160 bytes each, total 121.56 KiB
CheckRuntimeScope: 700 items, 168 bytes each, total 114.84 KiB
FieldParentPtr: 632 items, 184 bytes each, total 113.56 KiB
BoolToInt: 719 items, 160 bytes each, total 112.34 KiB
ResultLocPeerParent: 904 items, 104 bytes each, total 91.81 KiB
IntToPtr: 537 items, 168 bytes each, total 88.10 KiB
AlignOf: 561 items, 160 bytes each, total 87.66 KiB
AtomicRmw: 356 items, 208 bytes each, total 72.31 KiB
MemberCount: 441 items, 160 bytes each, total 68.91 KiB
Memset: 342 items, 176 bytes each, total 58.78 KiB
PopCount: 321 items, 168 bytes each, total 52.66 KiB
AlignCast: 251 items, 168 bytes each, total 41.18 KiB
IrInstruction *: 5230 items, 8 bytes each, total 40.86 KiB
IrBasicBlock *: 5230 items, 8 bytes each, total 40.86 KiB
TagType: 261 items, 160 bytes each, total 40.78 KiB
HasDecl: 234 items, 168 bytes each, total 38.39 KiB
OverflowOp: 191 items, 200 bytes each, total 37.30 KiB
Export: 209 items, 176 bytes each, total 35.92 KiB
SetCold: 219 items, 160 bytes each, total 34.22 KiB
ReturnAddress: 216 items, 152 bytes each, total 32.06 KiB
FromBytes: 178 items, 176 bytes each, total 30.59 KiB
SetRuntimeSafety: 188 items, 160 bytes each, total 29.38 KiB
OptionalWrap: 151 items, 168 bytes each, total 24.77 KiB
Clz: 143 items, 168 bytes each, total 23.46 KiB
ResizeSlice: 135 items, 168 bytes each, total 22.15 KiB
UnionInitNamedField: 106 items, 184 bytes each, total 19.05 KiB
Panic: 102 items, 160 bytes each, total 15.94 KiB
SwitchElseVar: 93 items, 168 bytes each, total 15.26 KiB
ToBytes: 89 items, 168 bytes each, total 14.60 KiB
IntToFloat: 78 items, 168 bytes each, total 12.80 KiB
Unknown_4360: 3 items, 4360 bytes each, total 12.77 KiB
ErrWrapPayload: 72 items, 168 bytes each, total 11.81 KiB
FloatOp: 62 items, 176 bytes each, total 10.66 KiB
FloatToInt: 47 items, 168 bytes each, total 7.71 KiB
FloatCast: 46 items, 168 bytes each, total 7.55 KiB
ErrToInt: 47 items, 160 bytes each, total 7.34 KiB
Asm: 33 items, 216 bytes each, total 6.96 KiB
ErrSetCast: 40 items, 168 bytes each, total 6.56 KiB
Memcpy: 34 items, 176 bytes each, total 5.84 KiB
AtomicLoad: 17 items, 184 bytes each, total 3.05 KiB
AwaitSrc: 16 items, 168 bytes each, total 2.62 KiB
Resume: 14 items, 160 bytes each, total 2.19 KiB
AwaitGen: 12 items, 176 bytes each, total 2.06 KiB
ArgType: 12 items, 168 bytes each, total 1.97 KiB
AnyFrameType: 12 items, 160 bytes each, total 1.88 KiB
SuspendFinish: 10 items, 160 bytes each, total 1.56 KiB
SuspendBegin: 10 items, 160 bytes each, total 1.56 KiB
Ctz: 9 items, 168 bytes each, total 1.48 KiB
FrameHandle: 8 items, 152 bytes each, total 1.19 KiB
SetEvalBranchQuota: 7 items, 160 bytes each, total 1.09 KiB
AssertZero: 7 items, 160 bytes each, total 1.09 KiB
UndeclaredIdent: 7 items, 160 bytes each, total 1.09 KiB
CmpxchgSrc: 5 items, 216 bytes each, total 1.05 KiB
CmpxchgGen: 5 items, 200 bytes each, total 1000.00 bytes
IntToEnum: 4 items, 168 bytes each, total 672.00 bytes
VectorType: 4 items, 168 bytes each, total 672.00 bytes
ErrorReturnTrace: 2 items, 160 bytes each, total 320.00 bytes
Breakpoint: 2 items, 152 bytes each, total 304.00 bytes
FrameAddress: 2 items, 152 bytes each, total 304.00 bytes
Unknown_4: 61 items, 4 bytes each, total 244.00 bytes
VectorToArray: 1 items, 168 bytes each, total 168.00 bytes
SetAlignStack: 1 items, 160 bytes each, total 160.00 bytes
Unknown_12: 2 items, 12 bytes each, total 24.00 bytes
ErrorTableEntry *: 0 items, 8 bytes each, total 0.00 bytes
AstNode *: 0 items, 8 bytes each, total 0.00 bytes
Total bytes used: 3.51 GiB
```

You can see that most of the memory is taken up by IR instructions,
as well as comptime values. This points toward 2 changes which will
greatly reduce memory usage:

 * Rework semantic analysis so that IR instructions can be freed.
   Currently the comptime value struct (ConstExprValue) is embedded
   directly into the IrInstruction struct. If this is made to be
   separate, at the very least pass 1 IR instructions can be freed.
   This includes `Const` which is the largest usage of memory currently.

 * Rework the ConstExprValue struct to no longer be a tagged union.
   For example, there's no need for an integer comptime value to be
   80 bytes.

From this you can also see that this eliminates some things from being
the culprit. Before doing this analysis, I considered whether doing
string interning would help. From the above output, you can see that all
strings in the compiler account for only 18 MiB, so string interning
would have been a dead end.
 2019-10-19 03:23:23 -04:00
LemonBoy
6cbb732b59 Extern unions should not trigger active field check 
Fixes #3378
 2019-10-10 13:57:48 -04:00
Michael Dusan
3464351d1e stage1: fix ir_resolve_str() to return slice 
`ir_resolve_str()` bug returns array expression even when when sliced
to a lesser length. Fix is to return array if slice.len == array.len,
otherwise return slice.

Bug report use-case is based on one builtin function. However, at least
the following builtins were exposed to the bug:

    `@byteOffsetOf`
    `@cDefine`
    `@cImport`
    `@cInclude`
    `@cUndef`
    `@compileError`
    `@embedFile`
    `@export`
    `@fieldParentPtr`
    `@hasDecl`
    `@hasField`
    `@import`
    `@unionInit`

closes #3384
 2019-10-10 10:20:04 -04:00
Michael Dusan
42f2814d9a stage1: fix root top-level-struct typename 
- during diagnostics the string representation for root was empty
  and now is `(root)`
- retrofitted all other namespace-qualified type naming to elide
  prefixing with root

closes #2032
 2019-10-09 17:36:13 -04:00
Andrew Kelley
2286003666
improve names of error sets when using merge error sets operator 2019-10-09 13:35:19 -04:00
Andrew Kelley
e0f0e2aace
generated docs: error sets in fn docs 2019-10-08 18:09:08 -04:00
Andrew Kelley
784a493dc7
generated docs: functions with inferred error sets display nicely 
infrastructure in place for displaying error sets
 2019-10-08 13:41:13 -04:00
Andrew Kelley
8e2c441b2e
stage1 parser supports doc comments 2019-10-06 16:39:27 -04:00
Michael Dusan
a23a022820
fix container member access for fn/struct-fn 
- decls brought in via `usingnamespace` were not always found
  because lookup was performed directly against decl_table and
  use_decls was never consulted
- fix to use find_container_decl() path instead
- closes #3367
 2019-10-05 14:09:09 -04:00
Michael Dusan
9983501ff2 add VarDecl support for struct-method call syntax 
implements #3306
 2019-09-24 19:24:48 -04:00
LemonBoy
5fb7af26ab
Fix result loc unwrapping with optional in error union 
Fixes #2899
 2019-09-24 01:09:26 -04:00
LemonBoy
93367adaa7
Fix assignment to optional payload 
Closes #3081
 2019-09-24 00:31:35 -04:00
Andrew Kelley
53ae03ebe9
make type_allowed_in_extern more robust 
Previously if the type parameter was a pointer, it would assert that the
size of the type was resolved. It used to be that the size of pointers was
always resolved, however with lazy values, pointers gained the
possibility of not having their size resolved.

Now, type_allowed_in_extern triggers the resolution of whether a pointer
is zero bits, and returns a possible error if the resolution fails.

This fixes a compiler assertion when building the
[zootdeck project](https://github.com/donpdonp/zootdeck). I do not have
a test case reduction for the issue.
 2019-09-23 15:02:38 -04:00
Timon Kruiper
3b4a6679a6 Fix comptime bitcast inside an expression 2019-09-20 13:13:26 -04:00
Andrew Kelley
005a54a853
fixups for @splat 
* Fix codegen for splat - instead of giving vectors of length N
   to shufflevector for both of the operands, it gives vectors of length
   1. The mask vector is the only one that needs N elements.
 * Separate Splat into SplatSrc and SplatGen; the `len` is not needed
   once it gets to codegen since it is redundant with the result type.
 * Refactor compile error for wrong vector element type so that the
   compile error message is not duplicated in zig source code
 * Improve implementation to correctly handle comptime values such as
   undefined and lazy values.
 * Improve compile error for bad vector element type to point to the
   correct place.
 * Delete dead code.
 * Modify behavior test to use an array cast instead of vector element
   indexing since I'm merging this splat commit out-of-order from
   Shawn's patch set.
 2019-09-19 10:58:12 -04:00
Shawn Landden
01577a3af4
@splat 2019-09-19 10:11:06 -04:00
Andrew Kelley
380c8ec2c9
implement runtime @byteSwap and other fixups 
* update docs for `@byteSwap`.
 * fix hash & eql functions for ZigLLVMFnIdBswap not updated to
   include vector len. this was causing incorrect bswap function
   being called in unrelated code
 * fix `@byteSwap` behavior tests only testing comptime and not
   runtime operations
 * implement runtime `@byteSwap`
 * fix incorrect logic in ir_render_vector_to_array and
   ir_render_array_to_vector with regards to whether or not to bitcast
 * `@byteSwap` accepts an array operand which it will cast to vector
 * simplify `@byteSwap` semantic analysis code and various fixes
 2019-09-19 00:59:04 -04:00
Shawn Landden
76f5396077
@byteSwap on vectors 2019-09-18 16:49:14 -04:00
Andrew Kelley
2038f4d45a
rework the implementation 
* update documentation
   - move `@shuffle` to be sorted alphabetically
   - remove mention of LLVM
   - minor clarifications & rewording
 * introduce ir_resolve_vector_elem_type to avoid duplicate compile
   error message and duplicate vector element checking logic
 * rework ir_analyze_shuffle_vector to solve various issues
 * improve `@shuffle` to allow implicit cast of arrays
 * the shuffle tests weren't being run
 2019-09-18 16:15:19 -04:00
Shawn Landden
193604c837
stage1: add @shuffle() shufflevector support 
I change the semantics of the mask operand, to make it a little more
flexible. There is no real danger in this because it is a compile-error
if you do it the LLVM way (and there is an appropiate error to tell you
this).

v2: avoid problems with double-free
 2019-09-18 11:26:45 -04:00
Andrew Kelley
9e4065fa73
remove TODO regarding lazy values 
The question was:

> // TODO do we need lazy values on vector comparisons?

Nope, in fact the existing code already was returning ErrorNotLazy
for that particular type, and would already goto
never_mind_just_calculate_it_normally. So the explicit check for
ZigTypeIdVector is not needed. I appreciate the caution though.
 2019-09-18 10:54:45 -04:00
Shawn Landden
74ce5e9e13
stage1: proper return type on vector comparisons 2019-09-18 10:36:10 -04:00
Shawn Landden
0e3ca4c63e
Fix array->vector and vector->array for many types. Allow vector of bool. 
Vectors do not have the same packing as arrays, and just bitcasting
is not the correct way to convert them.
 2019-09-18 09:52:58 -04:00
Andrew Kelley
914ad1ec2e
fix peer result location with typed parent, ... 
...runtime condition, comptime prongs.

closes #3244
 2019-09-17 22:30:49 -04:00
LemonBoy
ba4d83af3e Resolve lazy arguments passed to @compileLog 
Closes #3193
 2019-09-10 11:22:40 -04:00
LemonBoy
e2c68fce89 Accept void argument for @cDefine value 
Closes #2612
 2019-09-10 11:16:50 -04:00
Andrew Kelley
a3993465fe
Merge pull request #3200 from LemonBoy/eq-tagged-union 
Allow comparison between union tag and enum literal
 2019-09-09 16:17:45 -04:00
Andrew Kelley
f50bfb94b5
fix bad LLVM IR when for target expr needs to be spilled 
Also reduce the size of ZigVar in memory by making the name
a `const char *` rather than a `Buf`.
 2019-09-09 15:59:16 -04:00
LemonBoy
4b1cd45472 Comptime folding of enum/union comparisons 2019-09-09 19:09:56 +02:00
LemonBoy
cc63760587 Allow comparison between union tag and enum literal 
Closes #2810
 2019-09-09 18:51:13 +02:00
Andrew Kelley
229323e13a
fix suspensions inside for loops generating invalid LLVM IR 
closes #3076
 2019-09-07 17:37:17 -04:00
Andrew Kelley
d1a98ccff4
implement spills when expressions used across suspend points 
closes #3077
 2019-09-07 00:13:12 -04:00
Andrew Kelley
0a3c6dbda9
implement noasync function calls 
See #3157
 2019-09-05 21:55:32 -04:00
Timon Kruiper
ca70ca7e26 Add compiler error when negating invalid type 2019-09-05 15:27:50 -04:00
Andrew Kelley
2045b4d932
prefer result type casting to peer type resolution 
See #2749
 2019-09-05 14:56:52 -04:00
Timon Kruiper
866c253e0e
Add compile error when shifting amount is not an int type 2019-09-05 13:10:39 -04:00
Jonathan Marler
9a358d2d33 Add Array support to @Type 2019-09-05 13:08:45 -04:00
Michael Dusan
fe153ad2a4 stage1 enhance IR print 
- print fn name in pass1
- replace scalar with enum IrPass for clarity
 2019-09-05 13:06:10 -04:00
Timon Kruiper
e540e5b8ec
Implicit cast from enum literal to optional enum and implicit cast to payload of error union 2019-09-04 12:30:23 -04:00
Andrew Kelley
ac7703f65f
fixups and add documentation for @Type 2019-09-04 11:12:14 -04:00
Jonathan Marler
b728cb6d4e Add @Type builtin 2019-09-03 22:50:29 -06:00
Sahnvour
ce14c543d1 error message and test for alignment of variables of zero-bit types 2019-09-03 21:14:40 -04:00
Andrew Kelley
1862075652
fix union field ptr ir instruction 2019-09-03 18:25:00 -04:00
Andrew Kelley
d74b8567cf
omit prefix data for async functions sometimes 
When `@frameSize` is never called, and `@asyncCall` on a runtime-known
pointer is never used, no prefix data for async functions is needed.

Related: #3160
 2019-09-02 21:31:26 -04:00
Andrew Kelley
ab4cba14c8
fix recursive call of await @asyncCall with struct return type 2019-09-02 14:35:41 -04:00
Andrew Kelley
d291d3c8c0
fix using @typeOf on a generic function call 2019-09-02 13:07:44 -04:00